General Description
EMI filter window consists of one or more window layers with a conductive intermediate layer. They are applicable for all visual display systems to protect them from electromagnetic interference, e.g. in meters and monitors.
Due to the variety of possibilities, our EMI shielded windows are custom-made production. The windows should be selected according to following criteria:
Window material, Color of material, Dimensions, AR (anti-reflectivity), Type of intermediate layers, Construction, Gasket type, Frame finish
1. Window material
Optical glass, Plexiglas (PMMA), Makrolon (polycarbonate), PVC
2. Color of material
3. Anti-reflectivity
All materials can be supplied with anti reflective surface to avoid glaring and to enhance contrast.
4. Type of intermediate layers
Copper mesh, stainless steel mesh, conductive foil or ITO film
The mesh can be blackened so as to enhance contrast and plated with various metals to improve the performance. To avoid interferences between mesh grid pattern and monitor or display ("Moiré fringes"), simply change the orientation of the mesh by turning it a little.
5. Construction
Plain ending (Flying Plain Mesh) Step construction
6. Gasket Type
To achieve shielding effectiveness, a good contract between the mesh and the enclosure is required. The contract can either be established in a direct way or by means of a conductive gasket.
7. Frame Finish
Windows can be supplied from the factory as complete units. The finish is made according to customer specification and facilitates the assembly. The appropriate gasket is integrated in the frame to provide a good contact between mesh and enclosure.
You can also choose the copper foil or silver busbar instead of conductive gasket.
EMI filter window